The atmospheric cosmic- and solar energetic particle radiation environment at aircraft altitudes

被引:20
作者
O'Brien, K
Friedberg, W
Smart, DF
Sauer, HH
机构
[1] No Arizona Univ, Flagstaff, AZ 86011 USA
[2] Fed Aviat Adm, Civil Aeromed Inst, Oklahoma City, OK 73125 USA
[3] NOAA, CIRES, Boulder, CO 80303 USA
来源
LIFE SCIENCES: RADIATION ENVIRONMENT AND MODELLING | 1998年 / 21卷 / 12期
关键词
D O I
10.1016/S0273-1177(98)00060-X
中图分类号
V [航空、航天];
学科分类号
08 ; 0825 ;
摘要
Galactic cosmic rays interact with the solar wind, the earth's magnetic field and its atmosphere to produce hadron, lepton and photon fields at aircraft altitudes. In addition to cosmic rays, energetic particles generated by solar activity bombard the earth from time to time. These particles, while less energetic than cosmic rays, also produce radiation fields at aircraft altitudes which have qualitatively the same properties as atmospheric cosmic rays. We have used a code based on transport theory to calculate atmospheric cosmic-ray quantities and compared them with experimental data. Agreement with these data is seen to be good. We have then used this code to calculate equivalent doses to aircraft crews. We have also used the code to calculate radiation doses from several large solar energetic particle events which took place in 1989, including the very large event that occurred on September 29(th) and 30(th) of that year. The spectra incident on the atmosphere were determined assuming diffusive shock theory. (C) 1998 COSPAR. Published by Elsevier Science Ltd.
引用
收藏
页码:1739 / 1748
页数:10
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